Brake-gear for motor-vehicles.



'cation of the same.

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Appl'ic'eilti'on filed 'February 2e, 3.9;14. erai No. $20,640.

To al? wwmfz't may concern.'

Be it known that i, EDWIN on Ceno wenn, a citizen of the United States, residing at Dunkirk, in the county ,of Chauvtanquev and lState of New .Yorin have invented certain new end usei'c'gll improven ments in Brake-Gear for Motor-Vehicles; and I do hereby declare the olloivingto be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters oreterence marked thereon, forming part oi this specilication.

My invention relates to bralregear for motor vehicles, and has for its object the construction of gear whereby' the strains upon the upper and lower halves of a brake band will be equalized.

The 'features ot my invention will Vappear hereinafter in the specification and claims, and are illustrated in the accompanying drzmvings in which :H

Figure l, is :i side view in elevation of motor vehicle brake mechanism, embody ing my invention. 2, is an edgewise View ,of the saine. Fig. 3, shows a modifiln these drawings A, indicates a motor* vehicle brake drum; B, indicates a brake'- band, and B, indicates bracket levers secured onthe band B, adjacent to each end 'of the bund B.

C, indicates a portion of the rear axle housing of a rnotor vehicle, and C', indicates a bracket .arno on said housing for supporting" the bralzegear hereafter iviountcd in a suitable hearing in the bracket ar1n-C', is a rock-shaft D, having a transverse opening B", theretl-irough, and rotetahly mounted on said shaft on each side of seid opening D', there is s collar E. which collars are provided with oppositely disposed radial openings e, in the peripheries thereof. The bracket-levers B, are pro` vided with laterally extending; ears l). In.

these ears I), are slidabl;T placed rods F, which are provided at their inner ends with shoulders F", which enter the oppositely disposed radial openings e, in the collars E, on the .rock-shaft D. On these rods F, between the ears b, and the shoulders F', l p ace springs G. To the bracket ievers B, I pivot link. H, and to theends of the links H, l" secure a chain H', (sec Fig. 2) which Speoicetion of Lettersetent.

described.

va drum, an open band around the Patented dan. l2, i915.

chain' passes through the opening D, in the rock-shaft D. shaft D, l secure a washer ci, by means of a tap-bolt'd, to retain the collar E, on that end of the rock-shaft D. 0n the opposite end of the rock-shaft D, I place an operating lever d.

in Fig. 3, I illustrate an alternative con struction in which I do not use the chain H', hereinbelore described, substituting therefor links K, which are pivoted to the l ver-brackets B', and through the transverse opening D, in the shaft l), place a slidable linkl, thel ends of which are pivoted to the links K. .ln both. forms, however, the flexible connection between the two bracket-levers B, are adapted to'slide freely through the opening D, in the rochshaft D.

ln operation, when the lever J, is moved to the position thereof shown by broken lines in Fig. 3, the flexible connecting means between the bracket-levers B', is shortened by the partial rotation of the rock-shaft D, tl1e1-ehvcausing the bracket-levers B', to

approach each other and tighten the brakeband upon the brakedrum A., and 'when said lever is released, the springs G, force the leverbrackets l?, apart thereby to disengage the band B, from the drum'rlr; the

notion of the springs also retaining the rods F, seated 1n the radial openings e, in thel collars E.

Having thus fully described the construction and operation of my invention, what claim as nenT and desirev to secureby Let* ters-Patent is:-

l. n a device of the-.character described,

thereof, bracket-levers secured ad vcent to theendszof said hand, a braclreifarrn, a rock-shaft `having a transverse opening therethrough mounted in seid bracket-arm, a {iexible connecting; means between said bracket-levers and through the transverse opening in said rockshaft, spring mechanism to move said bracket-levers apart, and

means to `rock said rock-shaft, substantially as described. I

2. ln a Idevice of the character described, a drum, an open band around said drum, e rock-shafthaving an opening therethrough, a liexible 'element passed through said open` ing, means to connect said flexible element with the end ortions of said open band, spring mechanism adapted to expand said 0n one end of the rockband, and means to operate said rock-shaft, substantially as set forth.y y

3. In a 'device of the character described, a drum, an open band around said drum, a yrock-shaft having an opening therethrough, means to support said rocleslnift, collars on said rock-shaft, bracket levers secured on said open band, spring mechanism between said bracket-arms and said collars adapted to expand said band,

secured to said bracket-levers, and passingr through the opening in said roelcshaft, and

nieans to operate saidrock-shaft, substantially as set forth.

4Q lnl a device of the character described,v

a drun, an open band around the saine7 bracket-levers secured adgacent to the ends of said open band, ears on said bracketa flexible connect] on levers, a rock-shaft having a transverse opening therethrough, means to support the saine, collars 011,/y said rock-shaft having A 

